Mickey Mouse made his first appearance as a daily in The New York Mirror, on January 13th, 1930.
The first comic strip featuring Mickey Mouse was written by Walt Disney and illustrated by Ub Iwerks. The story finds Mickey trying to build his own airplane. The plot was inspired by Charles Lindbergh, who was the first person to fly across the Atlantic Ocean, five years before Amelia Earhart.
Mickey Mouse had already appeared in Walt Disney's first short feature "Steamboat Willie" in 1928.